Retirement--sort of

A retirement lifestyle increasingly can include part-time work to supplement pensions, Social Security, 401(k)'s, and other resources, or just to stay mentally engaged. Here's our list (arranged alphabetically) of the 25 best U.S. cities--actually, metropolitan areas or divisions--for a working retirement. We examined job growth trends and unemployment rates along with cost of living issues, taxes and other factors like crime rates, doctors per capita, and air quality.